Exam-style question a
An alloy is made from a mix of copper and
tin. The density of copper is 8.94 grams per
cm3. The density of tin is 7.3 grams per cm.
500 cm3 of the alloy is made from 360 cm3
of copper with 140 cm3 of tin.
Work out the density of the alloy to 3 s. f.

Given a normal distribution with µ =50 and σ =4, what is the probability that 5% of the values are less than what x values? between what two x values (symmetrically distributed around the mean) are 95 % of the values? instructions: show all your work as to how you have reached your answer. don’t simply state the results. show graphs where necessary.

Tanner has purchased a car with a loan. his bank now deducts the amount of the monthly payment from his account on the second of every month. which financial service has tanner’s bank offered him? a. money transfer b. automated payment c. online banking d. atm withdrawal

You are given the first four terms of an arithmetic sequence. which one is best to use, recursive formula or explicit formula? why? pleasseee ! : (